/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.jena.sparql.exec;

import java.util.Iterator;

import org.apache.jena.query.ResultSet;
import org.apache.jena.sparql.core.Var;
import org.apache.jena.sparql.engine.binding.Binding;

public class RowSetAdapter extends RowSetStream {

    private final ResultSet other;

    public ResultSet get() { return other; }

    public RowSetAdapter(ResultSet resultSet) {
        super(Var.varList(resultSet.getResultVars()), bindingIterator(resultSet));
        this.other = resultSet;
    }

    private static Iterator<Binding> bindingIterator(ResultSet resultSet) {
        return new Iterator<Binding>() {

            @Override
            public boolean hasNext() {
                return resultSet.hasNext();
            }

            @Override
            public Binding next() {
                return resultSet.nextBinding();
            }
        };
    }
}
